获取选定的单选按钮值，在单选按钮组中打开(ionChange)，ionic2

<ion-list radio-group [(ngModel)]="selectedValue">
  <ion-item *ngFor="let option of options">
    <ion-label>{{option.label}}</ion-label>
    <ion-radio value="{{option.value}}"></ion-radio>
  </ion-item>
</ion-list>

import { Component } from '@angular/core';

@Component({
  selector: 'page-home',
  templateUrl: 'home.html'
})
export class HomePage {
  selectedValue: string;
  options = [
    { label: 'Option 1', value: '1' },
    { label: 'Option 2', value: '2' },
    { label: 'Option 3', value: '3' }
  ];

  constructor() {}

  onRadioChange(event) {
    console.log('Selected value:', event.detail.value);
  }
}

<ion-list radio-group [(ngModel)]="selectedValue" (ionChange)="onRadioChange($event)">
  <ion-item *ngFor="let option of options">
    <ion-label>{{option.label}}</ion-label>
    <ion-radio value="{{option.value}}"></ion-radio>
  </ion-item>
</ion-list>

onRadioChange(event) {
  this.selectedValue = event.detail.value;
  console.log('Selected value:', this.selectedValue);
}